The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 1984
Filed:
Mar. 08, 1982
Shinji Yamagata, Fukuyama, JP;
Fumiyuki Hisatsune, Fukuyama, JP;
Junichi Terachi, Fukuyama, JP;
Hajimu Yoshiyasu, Itami, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention consists in a circuit breaker wherein a pair of rigid conductors which are disposed therein and at least one of which has a movable portion that separates a pair of contacts on the basis of the electromagnetic force of an excess current flowing through the contacts adapted to come into and out of contact with and from each other, are provided with arc shields in a manner to surround the contacts, thereby to bring forth the effects of increasing the arc voltage of an electric arc struck across the contacts and raising the separating speed of the contacts.